The German government continues to address the energy crisis by implementing tax relief to support small photovoltaics. This time, the tax relief is aimed at supporting PV systems under 30kW. The new rules plan to start in early 2023, and any photovoltaic system operating on a single-family residential or commercial property with an output of up to 30kW will no longer be required to pay income tax...
Energy storage converter, also known as bidirectional energy storage inverter, English name PCS (Power Conversion System), is used in AC-coupled energy storage systems such as grid-connected energy storage and micro-grid energy storage, connecting battery packs and power grids (or load), it is a device that realizes bidirectional conversion of electric energy. It can not only invert the DC power o...
The warranty of a solar system involves solar panels, inverters, installations and various other components. Owners always want to be effectively guaranteed throughout the life cycle of the solar system, and they know that it is important to choose the right solar panels and inverters. , it is also important to know that these components are properly installed. But when it comes to warranty, there...
There are various currents inside the cell, such as dark current, reverse current, leakage current, etc. Various currents have a greater or lesser impact on the power of solar panels. Distinguishing the characteristics of various currents can identify the cause of abnormal solar panel power and help solve the problem completely. dark current Dark current (DarkCurrent), also known as unilluminated ...
Structural analysis of photovoltaic modules The basic service life requirement of photovoltaic modules is that "after 25 years of outdoor work, it can still maintain 80% of the maximum output power of the initial value, and it is also required that it can effectively resist the impact of external forces. Photovoltaic modules are mainly composed of solar cells, backplanes, photovoltaic glass, packa...
The power factor of the photovoltaic grid-connected inverter is a point that has to be mentioned in the technical parameters. In an AC circuit, the cosine of the phase difference (Φ) between the voltage and the current is called the power factor, which is represented by the symbol cosΦ. In terms of value, the power The factor is the ratio of active power to apparent power, that is, cosΦ=P/S. Gener...
At present, there are many models of inverters on the market. In order to simplify management and explore the advantages of centralized procurement, many EPC manufacturers often use limited inverter models to do as many field designs as possible, which will inevitably involve the reduction of inverters. Content usage issues. A small reduction in capacity is not a big problem; but a large reduction...
Photovoltaic inverters are composed of circuit boards, fuses, power switch tubes, inductors, relays, capacitors, displays, fans, radiators, structural parts and other components. The service life of each component is different. The service life of the inverter can be explained by the "barrel theory". The maximum capacity of the barrel is determined by the shortest board, and the service life of th...